If he is what you think he is, he is saying all of the wrong things, so maybe he does this when he is thinking about what he is saying. I used to do it when speaking in front of large groups years ago.
Laperopter（ラペロプター）is the name of the amusement park: Wonder Eggs (1989-2000). The mechanical design is by Shigeki Toyama, who was in charge of planning and designing the Prop Cycle. The world view of Wonder Egg (& Phantomers) and the world of Prop Cycle are connected.